A couple of years ago I rode my 2005 VFR on the track at Chuckwalla Valley Raceway. The bike did fine, and it was still on the stock suspension, which I weigh too much for. (Down 20lbs tho!!!!) Sorry, where was I? Oh yeah. I was in a group of guys that race on that track and they all had positive things to say about the VFR, and couldn't believe a bike with a centerstand could scoot around the track like that. And I was running PR4 tires to boot. The fifth gen is sportier still. I have not ridden the 8th gen. In regards to VTEC, they're was an adjustment period, having come off of my Triumph Sprint RS, but once I got used to it, it was fine. In turns I either choose to keep under the VTEC transition, or above it. She's a thirsty girl when she's running all four valves in anger, but still very fun! Chuckwalla was run between 8,000 RPM to redline at all times, mostly 10,000+. I was told by said racers I could easily be in the B group or possibly the A group and that was my very first time at a track. The bike is capable. My only warning, is that my bike had a light switch throttle coming off idle. I mitigated this to a great degree by syncing the starter valves and removing the PAIR valves and system. I can't remember if removing the flapper valve did anything or not. I removed the snorkel just to hear the intake noise more easily. I did replace the cam chain tensioner at around 32-36k miles. Pretty easy actually. I love the looks of the 6th gen, so go for it.